PAGE, Ariz. (AP) — A thick, white band of newly exposed rock face stretches high above boaters’ heads at Lake Powell, creating a sharp contrast against the famous red desert terrain as their vessels weave through tight canyons that were once underwater.PAGE, Ariz. (AP) — A thick, white band of newly exposed rock face stretches high above boaters’ heads at Lake Powell, creating a sharp contrast against the famous red desert terrain as their vessels weave through tight canyons that were once underwater.